Leather perching and staking machine.



No. 651,609. Patented lunevl2, moo.

E. PBINTZ. I

LEATHER PERGHING AND STAKINGMAGHINE. (Application filed Mar. 9, 1960.

(No Model.) 3 Sheets$heet l.

1H2 Nonms PETRS cu. PHOYCvLITHC, WASHINGTON, 0,;

No. 65|,609.- Patentedlune l2, I900.

PRINTZ, LEATHER PERCHING AND STAKING MACHINE.

(Application filed marl 9', 1900 I (No Model.) 3 Sheets$heet 2.

No. s5|,e09. Patented lime [2, I900.

E. PRINTZ. LEATHER PERCHING AND STAKING MACHINE.

(Application filed Mar. 9, 1900.)

(No Model.) 3 Sheets-Sheet 3.

will? Eli? l l l lllllllliilllllilllllllllflilll THE Noam PzTcrs ca. auoraurna, wwmo'rm. an.

*FFICE PATENT ,EMANUEL PRINTZ, OF PHILADELPHIA, PENNSYLVANIA.

LEATHEIR PERCHINNG AND.STAKING MACHINE.

SFECIFICATION forming part Of Letters Patent NO. 651,609, dated June 12, 1900.

Application filed March 9, 1900. Serial No. 8,088. (No model.)

To all whom it may concern.-

Be itknown that I, EMANUEL PRINTZ, a citizen of the United States, residing in the city and county of Philadelphia, State of Pennsylvania, have invented a new and useful Improvement in Leather Perching and Staking Machines, which improvement is fully set forth in the following specification and accompanying drawings.

My invention relates to improvements in leather perching and staking machines; and it consists of means for'imparting an oscillatory motion to a lower jaw having an upper fulcrum and carrying staking devices and for imparting an oscillatory and reciprocatory motion to the upper jaw and its adjuncts.

, It also consists of an adjustable rod provided with a roller, which latter may be brought nearer to or farther from the lower jaw, according to requirements, said rod and roller constituting the upper jaw.

It also consists of novel means for opening and closing the jaws in order that the same may when opened permit a skin to enter or be adjusted between them, and when closed to bear against or bite that portion of a skin which is in contact with said jaws.

It also consists of novel means for imparting a swinging or oscillatory motion to the beam and cam-lever carried thereby, whereby the proper movements are imparted to the staking devices.

It further consists of the novel construction of an oscillatory beam, which latter supports the guiding-arm and the cam-lever, whereby the upper jaw is actuated.

It further consists of novel details of construction, all as will be hereinafter fully set forth, and particularly pointed out in the claims.

Figure 1 represents a side elevation of a leather perching and staking machine em-f bodying myinvention. Fig. 2 represents a front elevation of Fig. 1, certain of the parts being shown in section. section on linear :0, Fig; 2, certain portions of the operating mechanism being also shown in section. Fig. 4 represents a front elevation of the oscillatory beam and the operating devices therefor, portions of the beam being shown in section. Fig. 5 represents a side elevation of certain leather-staking devices,

Fig. 3 represents a showing a plurality of knives carried by the lower jaw which may be employed in lieu of the knife and roller seen in Fig. 3..

Similar numerals of reference indicate corresponding parts in the figures.

, Referring to the drawings, 1 designates the frame orhousing of a leather stakingmachino, the same consisting of the uprights 2, which are suitably braced at their lower portion and are joined at their upper portion by thetop piece 3. v

4 designates a swinging or oscillatory beam, which is fulcrumed at the upper portion of the uprights 2 by means of the rod 5, which rocks in suitable bearings. The beam 4 is composed of the'me'mbers 6, which are so as seinbled that an openingS is formed therebetween in which the cam-lever 9 is pivotally mounted upon its fulcrum 10, said cam-lever having the working faces 11 and 12, which in the present instance extend at substantially an obtuse angle to each other. The proper oscillatory movements of said cam-lever are imparted thereto through the medium of the sleeve or roller 13, which is mounted upon the crank-pin 14, which is secured to the crankdisks 15, between which latter is located the beam 4-, said crank-disks being operated by means of the pulley or pulleys 16 or other suitable mechanism.

17 designates ways which arc secured to the outer portions of the beam 4, in which works the roller or sleeve 13 of the crank-pin 14.

18 designates an adjustable link or turnbuckle, which is pivotally attached at the point 19 to the cam 9, said link or turnbuckle having pivotally attached thereto the upper jaw 20, which depends therefrom and passes between the rollers 21 and 22, which are mounted in a guiding-arm 23, which is secured to the beam 4 in any suitable manner.

The jaw 20 is further supported and guided by the spool or roller 22 mounted on the bracket 21*.

24 designates a roller or other'staking device, which is mounted in the upper jaw 20 by means of the threaded stem or stems 25, whereby the desired adjustment'of said staking device 24 is readily effected, said device being locked in the desired position by means of the j am-nuts 26.

27 designates the lower staking-jaw,which is in the present instance rigidly attached to the lower portion of the beam 4 and is provided with a knife 28 and the roller 29, both of which latter are attached to the plate 30, which carries said knife, said plate having the bolts or similar devices 31 depending therefrom and located in the slots 32 of the lower arm, whereby said knife and roller are readily adjusted upon proper manipulation of the nuts 33, as is evident.

I employ the knife 28 and the roller 29 in the manner seen in Figs. 1, 2, and 3 when it is desired to use the machine for perching leather; but in instances where the machine is to be used for staking leather I preferably employ the plurality of knives 3t and 35. (Seen in Fig. 5.)

36 designates a breast beam or pad, which is suitably attached to the outer portion of the table 37, the latter having the opening 38 to permit the reciprocation of the lower staking-jaw and its adjuncts.

39 designates a skin to be treated, the same being manipulated in the usual manner, as is familiar to those skilled in this art.

The operation is as follows: When the parts are in their extreme forward position, as indicated in Fig. 1, it will be apparent that the staking devices carried by the upper and lower jaws are exerting a, pull upon the skin, which exists until the parts have been rocked intonearly the position seen in Fig.3,whereupon, by reason of the action of the crankpin upon the proper working faces of the cam-lever 9 the upper jaw will be raised and theparts will appear substantially as seen in Fig. 3 until the crank-pin has rotated to substantially the point indicated in Fig. 1,whereupon its contact with the proper working faces of thecam-lever 9 will cause the latter to assume substantially the position seen in Fig. 1 thereby bringing the staking devices together and the operation is repeated. The skin; to be treated is. held by contact of the body of the workman against the breast-beam 36 and is shifted by the operator according tov requirements as soon as the staking devices leave their contacttherewith just prior to theinassu ming the position seen in Fig. 3. It will beapparent that the crank-pin simultaneously} imparts the proper oscillatory movementtto the. beamt and the lower jaw 27 at thesame time thatit rocks the cam-lever 9 byreason of the location of said cam between the members of the beam 4 and because 05 theposition of the working faces 11 and. 12. relative to said crank-pin. By the provision ofthe rollers 21 and22 and thespool or roller 22 which is mounted in the bracket 2l ,carried bythe arm 23, the proper position of the upper jaw 20 is always assured,and the same cantbevertically adjusted to the desired extent by means of the union-nut or the devices constituting the turnbuckle 18. The knife 28 and theroller 29 are capableof adj ust ment toward and away from eachother and alsolwith respect to the upper roller 24-, while the knives 34 and 35 can be adjusted toward and away from each other, as is evident.

I desire to call especial attention to the fact that the upper roller 24, when the parts are in the position seen in Fig. 1, presses against the knife 28 on its flat side, as distinguished from the cutting edge, which prevents the cutting, marking, or marring of the skin. It will be further apparent that in my construction and by reason of the dead-center or lost motion which exists between the crankpin and the working faces 11 and 12 of the cam-lever the staking device 2a closes upon the skin and occupies the position between the staking devices 29 and 28 and 3st and 35 momentarily before the backward movement of the jaws begins. I desire to also emphasize the advantage of imparting a rearward and downward curvilinear movement to the staking devices, while in my construction the roller never touches the edge of the knife, and therefore the grain is not pressed down and the pores of the skin are not opened from the crust.

It will be apparent that slight changes may be made by those skilled in the artwhich will come within the scope of my invention, and I do not therefore desire tobelimited in every instance to the exact construction I have herein shown and described.

Having thus described myinvention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a leather-staking maehine,a-beam1fnlcru med at its upper portion, a lower jaw on said beam carrying a staking device, an upper jaw and means for imparting an oscilla tory and reciprocatory motionto saidupper jaw.

2. In a leather-staking machine, anoscillae' tory beam fulcrumed atits upper portion, a lower jaw carried by said beam, a cam-lever pivoted tosaid beam, an upper jaw operated by said cam-lever, andmeans for actuating said lower jaw and cam-lover.

3. In a leather-stakinganachine,a beam fulcrumed at its upperportion, a camelever pivotally supported upon said beam, an upper jaw pivotallysuspendedfrom said camdever, guiding devices for said upper;jaw,a1ower jaw carrying staking devices,andmeans for actuating said j aw and. cam-lever.

4. In a leather-staking :device, an oscillatory beam, a cam-lever supported thereinand provided with working faces extending in'ans obtuse angle to each other, ways mounted on said beam, crank-diskslocatechon'either side of said beam and carrying a crank-pin adapt.- ed to work in said ways, and to operate: said cam-lever, a lower jaw carried by said beam, staking devices carried by said jaw, a guiding-arm also carried: by said beam, guidingrollers in. the extremity of said arm, and means for lengthening or shortening the distance between said cam and upper jaw.

5. In aleather-staking machine, a beam fulcrinned at its upper portion, a lower jaw car rying thereon staking devices adjustable toward and away from each other, an upper jaw having thereon staking device's capable of a plurality of vertical adj ustments, and means for operating said jaws.

6. In a leather-staking machine, a beam fulcrumed at its upper portion, a lower jaw carried by said beam, an arm projecting from said beam, staking devices carried by said arm, a cam-lever fulcrumed upon said beam, an upper jaw adjustably connected to said lever, ways carried by said beam, a crank-pin adapted to engage said ways and said lever, and means for actuating said cam-lever.

7. In aleather-staking machine, abeam fulcrumed at its upper portion, a camlever mounted upon said beam, an upper jaw, connections from said cam-lever to said jaw, a lower jaw carried by said beam and a crankpin for actuating said beam and cam-lever.

8. In a leather-staking machine, a beam fulcrumed at its upper portion, a cam-lever mounted upon said beam, an upper jaw pivotally attached to said lever, adjustable devices for said jaw intermediate the latter and said lever, staking devices carried by said jaw, means for raising and lowering said staking devices, guides for said upper jaw, a lower jaw attached to said beam, staking devices carried by said lower jaw and means for oscillating said beam and actuating said camlever.

9. In a leather-staking machine, a lever fulcrumed at its upper portion, a jaw projecting from the lower portion thereof and carrying staking devices, means for adjusting said staking devices toward and away from each other, a cam-lever fulcrumed in said beam, an upper jaw pivotally attached to said camlever, ways mounted on said beam, disks located on each side of the latter, a crank-pin common to said disks, said pin engaging said ways and said cam-lever, and means for ac tuating said crank-pin.

10. In a leather-staking machine, a beam fulcrumed at its upper portion, a lower jaw carried by said beam, staking devices mounted on said lower jaw, an upper jaw and a cam-lever common to said upper jaw and to said beam.

EMANUEL PRINTZ.

Witnesses:

E. HAYWARD FAIRBANKS, JOHN A. WIEDERSHEIM. 

